Update pre-release version
Update pre-release version

superyyrrzz/docfx,928PJY/docfx,DuncanmaMSFT/docfx,LordZoltan/docfx,dotnet/docfx,LordZoltan/docfx,hellosnow/docfx,superyyrrzz/docfx,pascalberger/docfx,DuncanmaMSFT/docfx,LordZoltan/docfx,superyyrrzz/docfx,pascalberger/docfx,hellosnow/docfx,pascalberger/docfx,hellosnow/docfx,dotnet/docfx,928PJY/docfx,LordZoltan/docfx,928PJY/docfx,dotnet/docfx